A Damage Rheological Constitutive Model for Greenschist

Abstract:

The stress-strain of triaxial rheological test for rock can be divided into three stages: initial attenuation rheological stabilization rheoligical and speedup rheological stages, the damage is rapid increased in the speedup stage. Damage mechanics is introduced into the Nishihara rheological model, a new rheological constitutive model is established which is combined with the concept of effective stress. The mechanical parameters are recognized by the experimental test data of greenschist. Computing result shows that, the presented model can described the mechanical characteristics in different rheological stage very well, and the error between simulated result and test data is small.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 647-650
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.647
• Online since: May 2012
• Authors: Hui Ge Xing, Da Lu Tan, Fu Gang Xu
• Keywords: Brittle Rock, Constitutive Model, Damage, Experimental Test, Rheological

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